body{background:radial-gradient(circle,#1e1e1e,#0a0a0a),linear-gradient(transparent 99%,#ffffff1a),linear-gradient(90deg,transparent 99%,rgba(255,255,255,.1));background-size:100% 100%,75px 75px,75px 75px;background-position:center,0 0,0 0;background-blend-mode:screen}